Graduate / MPH program - GRADUATE APPLICATION ESSAY [4]

Hello,

I am in the process of applying for MPH program and need help with starting my application essay. I am currently an undergraduate nursing student and plan on going to grad school right after graduation. I do not have any kind of experience in the global/public health field, but have always been interested in it and dream to one day work internationally in developing countries once i recieve my masters. This is the criteria for the essay:

In 750 to 1,000 words, state your professional plans and career objectives. Please include your personal qualities and development and how they have influenced your career choice; your reasons for this particular degree in relation to your academic background, professional work experience, and career goals; and your reason for selecting your program at [this university]

How do I begin, without having much experience!!

Thankyou